Question

16. The lattice energy of solid NaCl is 180 K.Cal
per mol. The dissolution of the solid in water
in the form of ions is endothermic to the extent
of 1K.Cal per mol. If the solvation energies of
Na+ and Cl- ions are in ratio 6:5, what is the
enthalpy of hydration of sodium ion?
1) -85.6K.Call mol 2) -97.5K.Cal/ mol
3) 82.6K.Cal /mol 4) +100K.Cal/mol
​

Answer 1

Explanation:

16. The lattice energy of solid NaCl is 180 K.Cal

per mol. The dissolution of the solid in water

in the form of ions is endothermic to the extent

of 1K.Cal per mol. If the solvation energies of

Na+ and Cl- ions are in ratio 6:5, what is the

enthalpy of hydration of sodium ion?

1) -85.6K.Call mol

2) -97.5K.Cal/ mol

3) 82.6K.Cal /mol ✔️✔️✔️

4) +100K.Cal/mol